As the weather gets warmer, the walnut small gizards have become active. Cryptocaryon larvae damage the stem cortex, which is an important pest that harms walnuts. The newly hatched larvae enter the epidermis of the shoots from the bottom of the egg. As the body grows, it gradually penetrates into the middle of the cortex and xylem to form a spiral tunnel with brown worms. There are inconspicuous crater marks on the surface of the damaged shoots and many Crescent-shaped vents. Severely damaged branches, yellow leaves withered early, most of branches in late spring dead, resulting in a large number of dead branches. Prevention methods include:
Strengthen water and fertilizer management by deep turning the soil, increasing organic fertilizer, timely fertilizer, reasonable intercropping and pruning, to enhance the walnut tree itself resistance to disease. From April to May, after the walnut sprouts and before the emergence of the adult, after cutting the fruit to the fallen leaves, the pests are cut and burned to eliminate the larvae and pupa.
Strengthen integrated management 1 biological control. There are two kinds of parasitic bees in the small giardia japonica, and the natural parasitic rate is 16% to 56%. The release of parasitoids can effectively reduce the number of overwintering populations and reduce or reduce insect pests. 2 chemical control. When a sapling is stricken, the larvae are often inspected at the height of their damage, and larvae can be found in the hole where they can invade. In the adult stage, combined with prevention and control of walnut pests, such as stick moth, crown spray.
The bait wood traps the adult eggs during the oviposition period and sets up some bait trees in time to induce the insects to lay eggs and burn them in time.
Thoroughly cut away the tip of the pest and combine it with the harvested walnut to completely remove the yellow leaves of the victim's leaves or destroy it before the adult's emergence.
Laser distance measure is a very convenient tool for various types of applications in industries, construction and house decoration. Laser distance meter is a very useful device which gives accurate measurement of distance, area and volume especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, infrastructures, gardens, roads, and many other applications requiring accurate results for distance , area and volume measurement.
Trade your heavy tape measure for laser
rangefinder, which let you simply take measurements with one hand. No matter
your job, the laser rangefinder will help you measure much farther, with
greater accuracy and in more situations, saving you money and time.
Specification:
|
Product Model: |
JX40 |
|
Accuracy: |
±1.5mm (0.06 inch) |
|
Measuring Unit: |
metre/inch/feet |
|
Measuring Range: |
0.03~40m (0.01 to 131 ft) |
|
Measuring Time: |
0.1~4 seconds |
|
Laser Class: |
Class II |
|
Laser Type: |
635nm, <1mW |
|
Waterproof & Dustproof : |
IP54 |
|
Auto Laser Off: |
60 seconds |
|
Automatic Power-off: |
480 seconds(8 minutes) |
|
Lighting: |
white LED |
|
Datum Option: |
Can choose Front edge or end piece edge as datum |
|
Battery Status: |
Y |
|
Signal Strength Display: |
Y |
|
LCD display: |
2 inch large screen |
|
Display illumination and multi-line display: |
Max 2 displays |
|
Data Memory: |
Y (allow 20 values) |
|
Backlight display: |
Y |
|
Continuous Measurement: |
Y |
|
Min/max Measurement: |
Y |
|
Addition/Subtraction(Distance/Area/Volume): |
Y |
|
Area/Volume/Pythagoras Measurement: |
Y |
|
Battery Type: |
AAA alkaline battery(2*1.5v ) |
|
Weight: |
about 80g |
|
Dimensions(L*W*H): |
4*2*11.5cm |
|
Auto correction and error report technology: |
Y |
|
Operating Temperature: |
0-40 ℃(32-104 ℉ ) |
|
Storage Temperature: |
-20~60 ℃ (-4~140 ℉) |
Laser Distance Meter,Laser Distance Measure,Laser Rangefinder,Laser Distance Gauge
Chengdu JRT Meter Technology Co., Ltd , https://www.accuracysensor.com